While we're at it, also document ZLIB_VERSION.

Patch by Torsten Landschoff.

instead of ignoring it and always using a compression level of 9.

Thanks July Tikhonov.

Also fix some markup and typos.

atime and mtime with nanosecond precision on modern POSIX platforms.

configure.in: Set _POSIX_C_SOURCE to 200809L, instead of 200112L, to activate
features from IEEE Stds 1003.1-2008.

configure: Set _XOPEN_SOURCE to 700, instead of 600, to get POSIX 2008
functions on OpenBSD (e.g. fdopendir).

PyLong_AsDouble() and PyLong_AsUnsignedLongLong() now raise TypeError (rather
than SystemError) when passed a non-integer argument, matching the behavior of
all the other PyLong_As*() functions.

instead of void*

<sched.h> is available (most notably on OpenBSD when built without pthread):
add an explicit configure check.

Skip the test if the function is missing. Use U+0061 (a) instead of U+00E9 (é)
because U+00E9 raises a _curses.error('unget_wch() returned ERR') on some
buildbots. It's maybe because of the locale encoding.

 - Fix PyUnicode_AsWideCharString() doc: size doesn't contain the null
   character
 - Fix spelling of the null character

Fix also spelling of the null character.

Push a character so the next get_wch() will return it.

instead of the locale encoding

instead of the locale encoding.